A quick way to check the type of the drive












4















Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
It's already known that the host is a physical machine and not a VM.
The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.



Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.






linux storage proc







share|improve this question



























    4















    Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
    It's already known that the host is a physical machine and not a VM.
    The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
    The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.



    Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.






    linux storage proc







    share|improve this question

























      4












      4








      4








      Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
      It's already known that the host is a physical machine and not a VM.
      The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
      The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.



      Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.






      linux storage proc







      share|improve this question














      Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
      It's already known that the host is a physical machine and not a VM.
      The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
      The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.



      Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.






      linux storage proc




      linux storage proc






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 2 hours ago









      lesovskylesovsky

      314




      314






















          2 Answers
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          How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            45 mins ago



















          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

            – lesovsky
            38 mins ago











          Your Answer








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          2 Answers
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          active

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          2 Answers
          2






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          2














          How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            45 mins ago
















          2














          How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            45 mins ago














          2












          2








          2







          How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.






          share|improve this answer













          How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 hours ago









          Janne PikkarainenJanne Pikkarainen

          28k33966




          28k33966








          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            45 mins ago














          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            45 mins ago








          1




          1





          Looks good, it works even with drives attached through RAID cards.

          – lesovsky
          45 mins ago





          Looks good, it works even with drives attached through RAID cards.

          – lesovsky
          45 mins ago













          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

            – lesovsky
            38 mins ago
















          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

            – lesovsky
            38 mins ago














          1












          1








          1







          A simple command:



          sudo lshw -c disk





          share|improve this answer













          A simple command:



          sudo lshw -c disk






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 45 mins ago









          d a i s yd a i s y

          1741214




          1741214













          • Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

            – lesovsky
            38 mins ago



















          • Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

            – lesovsky
            38 mins ago

















          Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

          – lesovsky
          38 mins ago





          Also looks interesting, but output of lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign

          – lesovsky
          38 mins ago


















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